Add an empty default dict for info column
Add an empty default dict for info column

Otherwise problems arise when later trying to update the info column, such as when a user updates their avatar.
OpenNewsLabs/pybossa,geotagx/pybossa,Scifabric/pybossa,OpenNewsLabs/pybossa,PyBossa/pybossa,jean/pybossa,jean/pybossa,Scifabric/pybossa,PyBossa/pybossa,geotagx/pybossa